MediFind found 32 doctor with experience in Vitamin D Deficiency near Williamsport, PA. Of these, 28 are Experienced and 4 are Advanced.
UPMC Endocrinology
Scott Segel, MD, specializes in endocrinology and is certified in endocrinology, diabetes and metabolism by the American Board of Internal Medicine. He practices at UPMC Susquehanna Health, Endocrinology in Williamsport. He completed his residency at Northwestern University Medical School and medical degree at Wayne State University School of Medicine. Dr. Segel is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Anaplastic Thyroid Cancer, Thyroid Cancer, Type 2 Diabetes (T2D), and Medullary Thyroid Carcinoma.
UPMC Susquehanna Health, Hospitalist Service
Osman Osman is an Internal Medicine provider in Williamsport, Pennsylvania. Dr. Osman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Dementia, Schizoaffective Disorder, Alzheimer's Disease, Hip Replacement, and Ureteroscopy.
Family Practice Center PC
Thomas Wallace is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Wallace is rated as an Advanced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Unstable Angina, Lung Nodules, Familial Colorectal Cancer, and Colorectal Cancer.
UPMC Endocrinology
Theresa Hershberger, CRNP, specializes in endocrinology and is a certified nurse practitioner by the American Academy of Nurse Practitioners. She practices at UPMC Susquehanna Health - Endocrinology in Williamsport. She received her associate's degree from Pennsylvania College of Technology, bachelor's degree from Chamberlain University, and master's degree from Bloomsburg University of Pennsylvania. Dr. Hershberger is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Vitamin D Deficiency and Hypoparathyroidism.
Susquehanna Health Family Medicine At Montoursville
Donna Mullarkey, MD, specializes in geriatric medicine and is board-certified in family medicine by the American Board of Family Medicine. She is affiliated with UPMC Williamsport and UPMC Muncy. Dr. Mullarkey completed her residency at Northern Light Eastern Maine Medical Center and medical degree from Mayo Clinic College of Medicine and Science. Dr. Mullarkey is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Boils, Chronic Kidney Disease, Breast Cancer, and Hyperlipidemia Type 3.
Qasim Mahmood is a Pediatrics specialist and a Hospital Medicine provider in Williamsport, Pennsylvania. Dr. Mahmood is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Obesity in Children, Developmental Dysphasia Familial, Umbilical Hernia, and Croup. Dr. Mahmood is currently accepting new patients.
Northeast Knee And Joint Institute, LLC
Dilip Elangbam is a Cardiologist in Williamsport, Pennsylvania. Dr. Elangbam is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Glucocorticoid-Remediable Aldosteronism, Hypertension, Pulmonary Embolism, and Idiopathic Edema.
Family Practice Center PC
Mona Chang is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Chang is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Heart Failure, Pulmonary Edema, Type 2 Diabetes (T2D), and Cirrhosis.
Family Practice Center PC
Steven Pinckney is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Pinckney is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Diabetic Nephropathy, High Cholesterol, Type 2 Diabetes (T2D), and Hypertension.
Family Practice Center PC
David Bresticker is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Bresticker is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension.
Family Practice Center PC
Frederick Lombard is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Lombard is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are High Cholesterol, Hypertension, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.
James Redka is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Redka is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Cirrhosis, Familial Combined Hyperlipidemia, Xanthoma, and High Cholesterol.
Medexpress Urgent Care, PC - Pennsylvania
Joshua Hottenstein is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Hottenstein is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Sacroiliac Joint Disease, Maturity Onset Diabetes of the Young, Lung Cancer, and Type 2 Diabetes (T2D).
James Baldys is a primary care provider, practicing in Family Medicine in Williamsport, Pennsylvania. Dr. Baldys is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Cyclic Vomiting Syndrome, and Shingles.
Jere Eshleman is a primary care provider, practicing in Family Medicine in Montoursville, Pennsylvania. Dr. Eshleman is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Renal Papillary Necrosis, and Opioid Induced Constipation.
Geisinger-Hm Joint Venture LLC
Jill Sharer is a primary care provider, practicing in Family Medicine in Montoursville, Pennsylvania. Dr. Sharer is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Hypothyroidism, and High Cholesterol.
Geisinger Clinic
John Kemberling is a primary care provider, practicing in Family Medicine in Montoursville, Pennsylvania. Dr. Kemberling is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. His top areas of expertise are Ptosis, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), and High Cholesterol.
Ingrid Donato is a primary care provider, practicing in Internal Medicine in Montoursville, Pennsylvania. Dr. Donato is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Juvenile Primary Osteoporosis, Chronic Obstructive Pulmonary Disease (COPD), Type 2 Diabetes (T2D), and Maturity Onset Diabetes of the Young.
UPMC Primary Care
Elizabeth Klucka, DO, specializes in family medicine and is certified in family medicine/OMT by the American Osteopathic Board of Family Physicians. She practices at UPMC Susquehanna Health, Family Medicine at Montoursville and is affiliated with UPMC Williamsport. She completed her residency at Williamsport Family Medicine Residency Center and medical degree at Philadelphia College of Osteopathic Medicine. Dr. Klucka is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top areas of expertise are Boils, Dementia, Low Potassium Level, and Gitelman Syndrome.
UPMC Primary Care
Brittany Todd, PA-C, specializes in family medicine and is a certified physician assistant by the National Commission on Certification of Physician Assistants. She practices at UPMC Susquehanna Health, Family Medicine at Montoursville. She received her bachelor's degree from Pennsylvania State University and master's degree from Lock Haven University. Ms. Todd is rated as an Experienced provider by MediFind in the treatment of Vitamin D Deficiency. Her top area of expertise is Vitamin D Deficiency.
Last Updated: 10/30/2025





